Physics
Scientific paper
Sep 1980
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=1980soph...67..339c&link_type=abstract
Solar Physics, vol. 67, Sept. 1980, p. 339-350.
Physics
10
H Alpha Line, Hydrogen, Line Shape, Lyman Alpha Radiation, Solar Flares, Solar Spectra, Spectrum Analysis, Data Acquisition, Data Reduction, Periodic Variations, Skylab Program, Spectrographs, Tables (Data)
Scientific paper
Photographic observations of the time development of the profile of the L-alpha line of hydrogen during flares were obtained with the NRL spectrograph on ATM. The profiles for the June 15, 1973 and Jan. 21, 1974 flares cover both core and wings of the line. The time sequences begin before flare maximum, and continue well into the decay phase. Careful attention has been given to photometry and absolute calibration. In the case of the June 15 flare, data are presented both first-order corrected and uncorrected for incomplete filling of the spectrograph slit by flaring material. Correction of the January 21 flare was not possible. Core symmetry and shift are discussed, and it is shown that the observations imply integrated flare L-alpha/H-alpha intensity ratios within a factor of two of unity for these two flares.
Canfield Richard C.
van Hoosier M. E.
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